<template>
  <div id="app">
    <h2>测试题</h2>
    <SubjectItem :arr="arr" @sum="sumFn"></SubjectItem>
    <div>
      <FlagItem :arr="arr"></FlagItem>
    </div>
  </div>
</template>

<script>
import FlagItem from './components/FlagItem.vue'
import SubjectItem from './components/SubjectItem.vue'
export default {
  components: {
    FlagItem,
    SubjectItem
  },
  data () {
    return {
      arr: [{
        num1: Math.floor(Math.random() * 10),
        num2: Math.floor(Math.random() * 10),
        status: '未完成',
        result: '',
        submitted: false
      }, {
        num1: Math.floor(Math.random() * 10),
        num2: Math.floor(Math.random() * 10),
        status: '未完成',
        result: '',
        submitted: false
      }, {
        num1: Math.floor(Math.random() * 10),
        num2: Math.floor(Math.random() * 10),
        status: '未完成',
        result: '',
        submitted: false
      }, {
        num1: Math.floor(Math.random() * 10),
        num2: Math.floor(Math.random() * 10),
        status: '未完成',
        result: '',
        submitted: false
      }, {
        num1: Math.floor(Math.random() * 10),
        num2: Math.floor(Math.random() * 10),
        status: '未完成',
        result: '',
        submitted: false
      }],
    };
  },
  methods: {
    sumFn (index) {
      if (this.arr[index].result == '') {
        return
      }
      if (this.arr[index].result == this.arr[index].num1 + this.arr[index].num2) {
        this.arr[index].status = '正确'
        this.arr[index].submitted = true
      } else {
        this.arr[index].status = '错误'
      }
    }
  }
}
</script>

<style>
body {
  background-color: #eee;
}

#app {
  background-color: #fff;
  width: 500px;
  margin: 50px auto;
  box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.5);
  padding: 2em;
}
</style>